Hey everyone! I'm diving into Docker and really enjoying it. To enhance my learning, I've decided to dockerize my existing Java application. I have a few questions that I'm hoping you can help with.
Firstly, my code has several instances of `localhost` because I'm using Caddy as a reverse proxy, along with Redis, MongoDB, and my Java code that runs on an embedded server (Jetty). All of these services are currently running on `localhost` but on different ports.
I'm looking to create separate containers for my Java application (jar file), Caddy, Redis, and MongoDB. My major concern is how to handle all those `localhost` references in my code and in Caddy. Is manually changing each `localhost` to the respective service name the only way to go? This seems like quite an effort! Any guidance would be greatly appreciated!
1 Answer
You should avoid hardcoding hostnames like `localhost` in your code for exactly this reason. A good approach is to manage hostnames through an environment file, so your code stays clean and the environment can be configured separately. It keeps things modular and flexible depending on where your code is running. Remember, this isn't strictly a Docker issue; it's more about organizing your project correctly.
I guess that's a valuable lesson about modularity. Thanks for the insight!